Reah is later found in the pit that Patches kicks the Chosen Undead down into, requesting the player to defeat her former followers, now hollowed. After accomplishing this task, she awards the player the Replenishmentmiracle and makes her way back to the surface. From this point on, she is found in the Undead Parish (next to the corpse that possessed the Fire Keeper Soul) and will sell both basic and advanced miracles to the player.

If Petrus is still alive at this point, he will soon try to assassinate Reah (see notes for details). If not, Reah will remain in the parish until the player exhausts her wares (except the Ivory Talisman), whereupon she will travel to The Duke's Archives and become hollowed there. There she will be in a cell near the cell that the player was put in after the first encounter with Seath the Scaleless.

Reah sells Wrath of the Gods, which can only be bought from her. She also sells basic miracles at a better price than what Petrus offers. If killed, her Ivory Talisman is one of the best talismans in the game. Even though it still falls short in terms of power to the Darkmoon Talisman, it is much more easily obtained.

After Petrus has killed her, he will drop the Ivory Talisman when killed.

As of Patch 1.05, there is a glitch where Petrus will not appear at Firelink if player proceeds directly to the Tomb of the Giants without talking to Reah and her group at Firelink Shrine, the player will encounter Reah and the hollowed clerics as he/she would normally. This will result in the player unable to save Reah from her demise at Petrus' hands.

If the player kills Petrus after he returns, but before Reah has been spoken to in the Tomb of the Giants, Reah will reappear in Firelink Shrine. However, she will attack the player when talked to. In order to continue her storyline, the player must absolve their sin through Oswald of Carim.

Reah will also attack the player if Petrus is killed before she and the others arrive.

If the player has killed Petrus before the three arrive and then kills Vince and Nico, they cannot reset Reah to be friendly. Even if the player's sins are absolved, Reah will not become friendly anymore.

If the player doesn't comply with Patches' request of looking down the ledge in the Tomb of the Giants and instead follows the narrow corridor decorated with prism stones behind them, they can hit the wall where the last prism stone is located and uncover an illusory wall with a ladder that leads down into the same chasm that Patches would have kicked the player in. Taking this route will allow them to catch Vince and Nico by surprise, making this fight much easier and allowing to save Reah (and get the Skull Lantern) without much trouble.

If Reah moves to the Undead Parish before the player defeats the Berenike Knight, she will not appear. However, killing the knight and returning to the area after resting at a bonfire or reloading the game will make her appear.

Reah can teach the player the "Prayer" gesture, if it has not already been obtained.

If attacked in the Undead Parish, she will not retaliate, but this will also result with her not selling her wares to the player until their sins are absolved.

According to her dialogue, apparently her followers got tricked because of her gullibility to Patches. However, Petrus abandoned her followers and herself because of his own motives.

You are Undead, as well? Then we've no time to fraternize. I have my mission, and you no doubt have yours. We must not let this curse overcome us.

Speaking with her at Firelink

Did I not explain the urgency of our tasks? Who are you so uncouth as to lack such judgement? By the looks of you...I should think not.

Finding her in Tomb of the Giants

You're no Hollow, are you? Thank goodness. Please be careful. There are two fierce Hollows not far from here. They were once brave knights... my former escorts. Who would let such strong spirits be Hollowed so? Heavens... Is there nothing... Nothing at all to be done.

Speaking to her after killing Hollowed Vince and Nico

You banished those two Hollows did you? It pains me to think of the trouble my failings have caused. I am certain both Vince and Nico are grateful to you. Thank you so very much. Here, these belonged to them. You deserve them more than I.

Speaking to her in Undead Parish

Hello... I will never forget what you did. I am deeply indebted, for it was not within my power to save Vince or Nico. I cannot thank you enough. In case you have not heard, I am Reah of Thorolund. I only wish there were some way I could help you, but I am inexperienced, and I only know the art of Miracles. If that could be of any help, speak to me again.

Speaking to her again

Would a Miracle be of any help to you? I would be most pleased if that were so. May we discuss Miracles, then?

Talk x1

Vince and Nico were fooled by a lout named Patches, and turned into Hollows. My prayers did them no good. It is my ignorance, my frailty that has sealed their fates. Perhaps Petrus realized my weakness all along, and thus made the decision to abandon me. I can hardly blame him now.

Talk x2

I do not warm easily to unfamiliar faces. The bonfire below is so frequented, it makes it difficult... I have lost all those who were close to me.

Greetings

I was wondering when you might return. It is a great relief to see you. Now, let us speak of Miracles.

I am most pleased to find you in good health. I am ready. Let us speak of Miracles.

Oh! Please, forgive me. I was absorbed in prayer. The Miracles, I presume? I will be ready immediately.

Farewell

Then, be safe. Farewell. Vereor Nox.

Attacking her

Ow! Horrors! The nerve! Are you a heretic, or just plain Hollow? It matters not, for you shall not escape! You will offend the Gods no longer!

Why on earth would you... Perhaps this is my punishment? Clearly, I am no threat to you. But please, I ask just one thing. If I do go Hollow, then finish me off. I beg of you.